| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a carrier for water treatment, which is obtained by using highly hydrophilic polyvinyl alcohol has an easily controllable specific gravity, exhibits high fluidity and durability, the and to provide a method for manufacturing the carrier and an apparatus for the water treatment. <P>SOLUTION: After water dispersion liquid containing polyvinyl alcohol and inorganic fine particles having≤1.0 apparent specific gravity is prepared, the polyvinyl alcohol is physically gelled, for example, by a freezing and defrosting method and/or a gelling agent is reacted with the polyvinyl alcohol to chemically gel to obtain the carrier 4 for the water treatment having inorganic fine particles having≤1.0 apparent specific gravity in the polyvinyl alcohol having rubber elasticity. <P>COPYRIGHT: (C)2003,JPO</p> |
